Grinding-machine.



B. B. PIKE & L. HAYNE;

GRINDING HAGHIHE. nruonxox rum) JULY 20, 1909.

Patented Au g. 2,1910.

2 SHEETS-433E! 1.

E. B. PIKE & L. HAYNE.

GRINDING MACHINE. nrmcnwn FILED JULY 20, 1900.

Patented Aug. 2, 1910.

2 anus-ans: 2;

INVENTORS W W;

l k l i of Essex, State of New Jersey, have invented certain new and useful Improvements hand, and more particularly to grinding mato which end they are commonly provided which rests will be securely held in place,

UNITED STATES PATENT onrrcn.

, E WIN BEBTBAM PIKE, OF PIKE, NEW'HAMPSHIBE, AND LEVI HAYNE, OF NEWARK,

NEW JERSEY.

GRINDING-MACHINE.

Specification of Letters Patent.

Patented Aug. 2, 1910.

Application filed July 20, 1909. Serial No. 508,872.-

To all whom it may concern:

Be it known that we, Enwm Bsn'rnmr Pins and Lrvi llarxr, citizens of the -United States, residing, respectively, at Pike, in the county of Grafton, State of New Hampshire, and Newark, in the county in Grinding-Machines, of which the following is a description, reference being bad to the accompanying drawings, forming a part hereof.

' Our invention relates to grindin machines having a comparatively sum 1 and rapidly running emery or earborundmn or similar abrasive wheel and designed for the lighter kinds of work and to be operated by chines coming within the above descri tion and designed for household or genera use with various detachable guides or rests designed to be attached to the machine when a tool of specific character is to be ground, for the purpose of supporting the tool and holding it. properly with reference to the grinding wheel; and the cbject of our invention is to provide a grin-ling mach'ne of the type referred to in. which the vari us rests or guides may be conveniently attached l to and detached from the machine. and

than has been the case in prior machines; to provide an effective and a. more convenient grinding machine and one well adapted to t e uses for which it is intended; and to provide such other improvements in "rinding machines as are'hereinafter disclosed; all-as illustrated in the accompanyin drawing, described in the following specification, and particularly claimed in the clauses of the concluding claim.

In the accompanying drawings comprising two sheets: Figure 1 is a view showing our improved grinding machine in side elevation; Fig. 2 1s a view showing an end elevation of our machine, this view showing also a drill grinding guide or rest attached to the machine; Fig. 3 is a erspective view of a. combined block and toolh'est forming a part of our machine; Figs. 4 and 8 are fragmentary views illustrating a rest for use when grinding a shear blade and showing its manner of attachment to the grinding machine; Figs.

5 and 7 are similar views relating to a l'tn't for use when grinding a slate; and Fi 6 is a similar view illustrating in plan the rill grinding rest shown as attached to the machine in Fig. 2.

Our improved grinding machine comprises a frame 1 which is so formed as to be conveniently attached to a table or shelf 2 by means of a clamping screw 3.

4 is a gear and 5 a pinion driven thereby, and 6 is a. sprocket wheel driven b the pinion 5 anddrivingthe grinding w eel shaft 7 by means of a s rocket chain 8. A suitable bearing is provided at the upper end of the frame 1 for the grinding wheel shaft 7, and suitable bearings are also provided for the gear wheel 4, and pinion 5 and sprocket wheel 6.

The train of gearing above referred to may be operated by a handle 9, whereby r0- tary motion is transmitted to the grinding stood.

11 is an arm formed with or attached to the frame 1 and extending into a position beyond the eriphery of the grinding wheel 10, at whic point the tool grinding rests furnished with the grinding machine and designed to be used therewith are secured, land the rests referred to maybe most conveniently attached to the end of the arm 11 if the free end thereof is provided with 5. vertical plane surface disposed in a plane without but extending parallel with the sides of the wheel as will be understood from the drawings. The free end of the arm 11. is preferably provided with a slot extending longitudinally thereof as shown at 12.

13 is an element in the form of a block and is referred to hereinafter as a. tool rest because of the fact that it is preferably so formed as to afiord supporting surfaces for I various kinds of tools to be ound, thereby increasing the capacity of t 6 machine, although it will be understood that the principal purpose of our invention is to provide ,forthe use .with the machine of rests other than the rest 13, that rest, however, forming a part of the means provided for facilitating the attachment of such other rests to the machine and for supporting them. The rest 13 is secured to the free end of the arm 11, preferably by means of a. bolt 14 passing through a hole in the rest and through the slot 12 as shown in the drawings, and the cured to the free end of the rest 13. or, as

otherwise stated. are secured :o the end of the re..-t 13 which is remote from the free end of the arm 11 which arm support the rest i3 15 above explained. The rests referred to may he, as we Lel eve, best dipper-ted by providing the end cf the test 1 5 wi'h a plane surface lying in a vent-a1 plain parallel with the plant; of the wlee 10 and pro ti ling some part ")f said rests with opening and making the bolt 14 long enough to extend titrougr thc arm 11, rest 13 and through su h optning, in which: case all the parts men'ione l iaav be secured togetne bv means f a sirgle bolt. 15 is a wing. end of he olt 14. y

Various forms of rests to be secured to the machirc are drown in the drawings. Tluir form forms no part of the invention disclosed in this application, our invention having to (l(, with, the means provided,

wherrby such or similar rests may be attached to and so )purted from the frame of the maclzine. Tliese rests snag, as will be understood from the drawings provide for grinding upon either the face or upon the side of the wheel 10.

Figs. 2 and 13 show a re'st fur use when grindin a twist drill. such H3 l l'aing provided w1th an arm 1.3. b tin-ans ofwhirh it may be secured to the end of the rest US as above disclosed; Fig 4 and 8 show a rest fer use when grinding a shear blade. such rest bring provided with an arm I; for securing it to the end of the rest 13: and Figs. 5 31H 7 show a rest for use whetgrinding a skate, such rest being provided with an arm 17 for securing it to the end of the rest 13 and with a second arm 18 which extends into a position opposite the face of the wheel 10 and adjacent the rest 13 where a screw 19 is provided, between the end of which and a face of the rest 13 the skate blade to be understood from "lg. 53, the grinding being done u on the face of the wheel. lVhi e as above explained the purpwe of our invention is t:) facilitate the attachment,

to the machine of rests other than the rests 13, our invention contemplates also a form of the rest 13 whereby the capacity and availability of the machine for grinding various kinds of tools is increased. To this end the periphery of the rest 13 is form'ed with a plurality of plane surfaces such as 20,

21, 22, 23, as many as may be desired, which surfaces are arranged at varying angles to one another; so that the rest 13, being as shown and as will be understood adjustable nut upon the ound is placed as will about an axis parallel with the axis of the prinding wzeel 1U. now be -t't"H't'tl to thr arm ll in various align at pt iti ns o as to support a given tool to be ground. sti it for in-tanre as .t rhisel. 3 lane blade. raper. a.. "try. upnr some one of the r 'hera surfaces aforesaid at a definite and pre it-termined angle to thr fare of the whet lt). =nd thereforin'suth a \\'t that its cutting edge w t be ground at the proper angle for the tool in one tion: and in order to till further incr ase he capacity of the llttltlll'l" for griuiln; \Jl'ltilb bid of tools w preft 1' to provide cert n of the surfn-es above rcfvrred to of 'he 1-. t 13 with grooves such as il in Jl i -lillllg a all such as a kni e so that it may be gionn-l upon th sides of the wheel as -hor-n in Fig. :2.

In the cad-ms gin-es of the 'lrawings. leprt will. a twist lllll. a ln-ar liladt'. 27 askate blade or runner. and 28 a knife blade.

llavim: thus described a invention and espl ined the mode of operation thereof, we claim :tl'ti desir to secure bf Letters Patent:

1. In a to l gtinding machine. a frame; a rotary grinding wheel supported thereby; means fur rotating said whet-l; an arm e.\'- tending from --aid flame and into a position bey nd the periphery of said wheel and provided at ll nd with a plane surface extending parallel wi h the s de of said wheel and which surface is lorated in a plane without and t; one side of the plane of the side of rai wheel: a tool rest extmding across the fare of aid whet-l and of greater length than the uidth of said fare and provided with two parallel nlane surfaces one designed to rrgage the plane surface of the end uf said :H m and to the other surface of whi h tool rtst a SWOIltl tool rest may be secured: and means for securing said first mentioned tool rest to sail arm.

2. In a tool grinding machine, a frame;

a rotary grinding wheel supported thereby;

means for rotating said wheel; an arm extendin r from saidframe and into a. position beyon the periphery of said wheel and pro vidt-d at its end'with a plane surface extending parallel with the side of said wheel and which surface is located in a plane with- .out and to one side of the plane of the side of said wheel; a tool rest extending across the face of said wheel and of greater length than the width of said face and provided with two parallel plane surfaces one designed to engage the plane surface of the end of said arm and to the other surface of which tool rest a second tool rest may be secured; means for securing said first mentioned tool rest to said arm; said arm being provided with an opening and said first; mentioned tool rest, being rovidod with a hole extending longitudinally thereof; and a bolt extending through said opening and hole and adapte to secure said rest to said arm.

3. In a tool grinding, machine, a frame; a rotary grinding wheel supported thereby;

means for rotating said wheel; an arm extending from said frame and into a position beyond the periphery of said wheel and provided at its end with a plane surface extending parallel with the side of said wheel and whieh surfaceis located in a plane without and to one. side of the plane of the side of said wheel: a tool rest extex'ling across the fare of said wheel and of greater length than the width of said l'aee and provided with two parallel plane suri'ares one designed to engage the plane surfaee of the end of said arm and to the other surl'a e ol" whieh tool rest a second tool rest may be secured: and means whereby a seeond tool rest may beseeured to the surface of said lirst mentioned tool rest whieh is opposite the. snrt'a e thereof in eomaet with said arm.

4. ln a tool grinding maehine, a frame; a rotary grindin; wheel supported thereby; m ans for rotatin; said wheel; an arm extending; from said frame and into a position beyond the periphery of said wheel: a'tool' rest seeured to the end of said arm and extending aeross the fare of said wheel and ter minalin; in a surl'aee parallel with and be yond that side of the wheel \Yllltll is opposite said arm; and means whereby a second tool rest may he set-,nred to the above mentioned surtaee of said lirst mentioned tool Test.

5. in a tool grindin; maehinea frame; a rotary grinding wheel sllppotlud thereby;

means for rotating said wheel; an arm ex-- tending from said frame and into a position beyond the periphery of said wheel and provided at its end with a plane surl'aee extending parallel with the side of said wheel and \\'llit'll surface is loeated in a plane without and to one side of the plane of the side of said wheel; atool rest extending across the face of said wheel and of greater length than the width of said face and provided with a plane surface designed to engage the plane surface at: the end of said arm; and means for securing said tool rest to the end of said arm and for permitting an adjustment; of said rest about an axis parallel with the axis of the grinding wheel, the periphery of said rest comprising a plurality of plane surfaces whereby a tool supported thereby may he held at a definite angle to the grinding wheel.

(3. In a tool grinding machine, a frame; a. rotary grinding wheel supported thereby; means for rotating said wheel; an arm extending from said frame and into a position beyond the perip ery of-said wheel; a tool rest seeured to the end of said arm and ex tending" :tt't'nss the face of said wheel and. into a position beyond that side of the wheel which is opposite said arm; and means for securing said tool rest to the end of said arm and for permitting an adjustment of said restabout. an axis parallel with the axis of the grinding wheel, the periphery of said rest. eomprising a plurality of plane surfaces whereby a tool supported thereby may he held at a definite angle to the grinding wheel.

7.1a a tool grinding machine, a frame; a rotary grinding wheel supported thereby; means for rotating said wheel; an arnt extending; from said frame and into a. position be \'n|nl the periphery of said wheel; a tool rest seemed to the end of said arm and ex tending aeross the law: of said wheel; and means l'vr set-tiring 'said tool rest to the end of said arm and for permitting an adjustmentof said rest about an axis parallel with the. axis of the grinding wheel. the periphery 

